I'm starting with a 360 that needs to be rebuilt. '75 make. I have heard that a 360 block from 88 down will work. Is that right? Anyway, if I can't find a 360 block, I'm sure the 340 long blocks are expensive, anyone got a ball park on a stock 340 long block? I may need to find a 360 block, this one is at 60 over already, if it is too worn for honing, I will need to find another bock, if I can't find another block, I may need to go with a 318. I am planning to port the heads and get a large hydraulic roller cam for which ever one I end up with. If I can't find an empty 360 block, I will probably have to get a completely rebuildable long block 318 or 360. I know the list is long, but can someone give me an idea of the "basic" pro's and con's of having a 318 vs a 360 and vice versa? For example: I have heard the 318 is quicker off the line, and the 360 is more for top end. A 318 might be easier to find, I don't know. Do I have any other options I am not aware of?